{"id":"CVE-2026-66300","aliases":["EUVD-2026-52869","GHSA-hc58-x27q-7xc8"],"status":"published","title":"SNOMED International Snowstorm reflected XSS","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0032,"percentile":0.25254,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-08-04T18:51:27Z","modified":"2026-10-28T11:01:21Z","products":[{"vendor":"snomed international","product":"snowstorm"}],"references":[{"url":"https://github.com/IHTSDO/snowstorm/commit/575b555695811110dafe2fcea7dd2fd7e4bcee39","tags":["patch","fix"]},{"url":"https://github.com/IHTSDO/snowstorm/commit/b8061add427c930b3030549e77aa23ec5957ceb6","tags":["patch","fix"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-66300","tags":["vdb-entry","advisory"]},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-212-01.json","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66300","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hc58-x27q-7xc8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66300.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-66300","title":"SNOMED International Snowstorm reflected XSS","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","status":"published","published":"2026-08-04T18:51:27.626Z","modified":"2026-08-04T18:58:36.936Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:13.272106Z"}],"euvd":[{"id":"EUVD-2026-52869","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","status":"published","published":"2026-08-04T18:51:27Z","modified":"2026-08-04T18:58:36Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T18:02:22.516769Z"}],"ghsa":[{"id":"GHSA-hc58-x27q-7xc8","title":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\"...","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","status":"published","published":"2026-08-04T21:30:28Z","modified":"2026-08-04T21:30:28Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:10:06.083807Z"}],"nvd":[{"id":"CVE-2026-66300","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","status":"published","published":"2026-08-04T19:16:51.97Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:34.643497Z"}],"osv":[{"id":"CVE-2026-66300","title":"SNOMED International Snowstorm reflected XSS","description":"SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.","status":"published","published":"2026-08-04T18:51:27.626Z","modified":"2026-10-28T11:01:21.972112199Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:14.46177Z"}]}}